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St. Catharines, ON — 3 hour detailed weather forecast


ON, Canada » St. Catharines


Forecast for today, Sunday, May 3, 2026
Detailed forecast - 3 hours intervals

23:00

Clear
+4°
feels like: +1°
Clear
Relative humidity: 79%, pressure: 753 mm
Precipitations: 0.0 mm
Wind: 11 km/h, southwest
02:00

Clear
+4°
feels like: +2°
Clear
Relative humidity: 82%, pressure: 752 mm
Precipitations: 0.0 mm
Wind: 7 km/h, west
05:00

Partly cloudy
+3°
feels like: +1°
Partly cloudy
Relative humidity: 76%, pressure: 752 mm
Precipitations: 0.0 mm
Wind: 7 km/h, southwest
08:00

Sunny
+6°
feels like: +4°
Clear
Relative humidity: 69%, pressure: 752 mm
Precipitations: 0.0 mm
Wind: 11 km/h, southwest
11:00

Overcast
+10°
feels like: +8°
Overcast
Relative humidity: 61%, pressure: 752 mm
Precipitations: 0.0 mm
Wind: 14 km/h, southwest
14:00

Overcast
+12°
feels like: +12°
Overcast
Relative humidity: 55%, pressure: 750 mm
Precipitations: 0.0 mm
Wind: 25 km/h, southwest
17:00

Overcast
+13°
feels like: +13°
Overcast
Relative humidity: 58%, pressure: 749 mm
Precipitations: 0.3 mm
Wind: 22 km/h, southwest
20:00

Overcast
+11°
feels like: +11°
Overcast
Relative humidity: 68%, pressure: 748 mm
Precipitations: 0.1 mm
Wind: 18 km/h, southwest
23:00

Partly cloudy
+11°
feels like: +11°
Partly cloudy
Relative humidity: 56%, pressure: 748 mm
Precipitations: 0.0 mm
Wind: 22 km/h, southwest
02:00

Overcast
+11°
feels like: +11°
Overcast
Relative humidity: 63%, pressure: 747 mm
Precipitations: 0.0 mm
Wind: 22 km/h, southwest